Mechanism for finishing engine bed-frames



(No Model.) 3 Sheets-Sheet 1.

, W. F. PARISH.

MECHANISM FOR FINISHING ENGINE BED FRAMES.

NO. 332,742. Patented DeoJZZ, 1885.

gain esszs.

(No Model.) 3 Sheets-Sheet 2.

W. F. PARISH.

MECHANISM FOR FINISHING ENGINE BED FRAMES.

No. 332,742. Patented Dec. 22, 1885.

NN\NIIIIIIII (No Model.) 3 SheetsSheet 3. W. I. PARISH.

MECHANISM FOR FINISHING ENGINE BED FRAMES.

No. 332,742. Patented Dec. 22, 1885.

au c pV z'fnesses- NITED STATES PATENT Orrrca.

\VILLIAM F. PARISH, OF MINNEAPOLIS, MINNESOTA.

MECHANISM FOR FiNlSHING ENGINE BED-FRAMES.

SPECIFICATION forming part of Letters Patent No. 332,742, dated December 22, 1885.

Application filed June 22,1885.

- specification.

My invention relates to improvements in means for preparing and fitting cast-iron bedframes of engines to receive the several parts of the engine that are secured to or supported by such bed frames. These bed-frames are cast in one piece,and they have a circular end, to which the end of the cylinder is secured, and through which the piston-rod extends. They also have a box or boxes for the crankshaft, and projections or lugs, to which the guides for the cross-head are secured.

The objects of my invention are to provide means by which these parts of the bed-frame may be fitted and aligned, so that when the engine is put together its working parts supported by the bed-frame will all be in correct position, and to do this work in a cheap and expeditious manner.

In the accompanying drawings, forming part of this specification, Figure 1 is a longitudinal section of a bcdframe with a part of my mechanism in position thereon. Fig. 2 is a plan of the same without the centerer D of Fig. 1. Fig. 3 is a section on line X X of Fig. 2. Fig. 4 is a detail plan view showing the projections to which the cross-head guides are secured. Fig. 5 shows front and side elevations of the reamer. Fig. 6 shows similar views of the tap. Fig. 7 is a side elevation of the tool for truing the end of the bed. Fig. 8 is a view of the screw-threaded clamp. Fig. 9 is a view of a sleeve used on the arbor when engine-frames of large size are to be finished. Fig. 10 is a detail. Fig. 11 is a plan ofmechanism as used 011 a bed-frame for a side-crank engine. Fig. 12 is a section on line Y Y of Fig. 11. Fig. 13 is a detail.

A, Figs. 1 and 2, represents a cast-iron bedframe. It is east in one piece, and has the end A, to which the end of the cylinder is bolted; also the projections 72 n, to which the guides for the cross-heads are secured,and the boxes I for the crank-shaft.

Serial No. 169,481. (No model.)

B E represent an arbor, having the cross part E at right angles to the main part B. This arbor is centered in the bed-frame, and by it the parts of the bed-frame are aligned and trued, the position that is occupied by the axes of the arbor being the position that will be occupied by the axes of the crankshaft and piston-rod when the engine is complete. This arbor is placed in the bed-frame with the cross part E in the boxes P, and the end of the part B extending through the open ing in the end of the bed-frame.

D is a clutch,having ahole through its center adapted to fit the arbor B, and having blocks D, moving in radial slots, and provided with adjustingscrews D This clutch is placed on the arbor and brought near to or against the end of the bed-frame. The arbor is then centered bybringing the blocks against the ring a on the bed-frame.

G G are plates by which the arbor is centered between the projections 92 n, and by means of which the surfaces of these projections are trued and aligned to receive the guides for the cross-head. These plates have recesses, as shown, fitting the arbor B, which may be semicircular, so that the plates will meet upon each side of the arbor, and they extend above and below the projections a a, as shown in Fig. 3. The arbor is provided with the bolt-holes b, and the plates have each a central hole adapted to register with the holes I). The holes I) may be oblong in crosssection, as shown in Fig. 4, so that they regis ter with the holes in the plates, even though the latter are not over the center of such holes. Bolts (Z are passed through the plates and the arbor, holding them firmly together. A lon gitudinal groove, 1), is formed in one or both sides of the arbor, and a corresponding groove is formed in the inner surface of one or both of the plates 0. A key, 0, is inserted in these grooves, as shown in Fig. 3, so that the plate and arbor are firmly united, and the plate extends across the arbor in proper alignment therewith. The upper plate, 0, extends over the projections n and over the vertical walls of the bed-frame, and is provided with the setscrews f f, which are arranged to bear on the bedframe. By these screws the plates are leveled, thereby bringing the part E of the The under surfaces of the upper plates and the upper surfaces of the lower plates are now perfectly level, and each is at a short distance from the surfaces of the projections. A bolt, 1), having preferably a thread upon each end, and provided with nuts for each end, is passed through the plates and through the projections 12. These bolts are smaller in diameter than the holes in the projections, and they preferably taper a little from the upper to the lower end. The projections n are preferably cast with recesses in their upper and lower surfaces, and the upper plates are preferably provided with holes h, located over the pro ject-ions n. The cross-arbor E is provided with suitable collars, N, adapted to fit against the outer ends of the boxes P, and with shoulders E, adapted to fit against the inner ends of the boxes. After the arbor and plates are brought to the proper position a quantity of molten metalsuch as Babbitt metal or lead, or other metal that is suitable for forming a supporting-surface for the guidesis run through the holes h, from which it flows into and fills the spaces between the plates and the projections and around the bolt b. When the metal becomes hard and the plates are removed, the surfaces of the projections will be true and level and ready to receive the guides without any other fitting, and the holes through the projections will be smooth and finished. The metal sets closely around the bolts b,- but they may be readily removed by removing the lower nuts and screwing down the upper ones. When tapering bolts are used, they may be very easily removed in this manner, or they may be driven out.

Into the boxes 1?, around the cross-arborE, I run Babbitt or other suitable metal, to finish the boxes and form the bearings for the crankshaft. IVithout removing the arbor, I then finish the end of the bed-frame by means of tools mounted on the arbor B. The centerer D is removed from the arbor, and the reamer G, having an opening to fit the arbor and carrying the cutters g, is placed on the arbor and rotated thereon to ream out the opening through the end of the bed. The reamer G is removed and the threaded tap F, which also has an opening through it fitting the arbor, is placed on the arbor, and a thread is cut in the end of the bed to receive the stuffingbox.

The tool shown in Fig. 7 is employed to true the end of the bed. In order that the arbor may be kept from trembling or shaking during this operation, the tapering threaded split sleeve H, which serves as a lock or clamp, is placed over the arbor and screwed into the end of the bed. As this collar becomes worn, it may be screwed in farther and the arbor still held firmly.

These The tool for truing the end of the bed consists, preferably, of the two parts J and R, each of which has an opening fitting over the arbor, to which the part B is clamped by setscrews 0', while part J is free to revolve thereon. The part B is provided with the shaft S, carrying the pulleys M and gear L. The part J has the gear K, which meshes with the gear L, and by which the part J is revolved on the arbor.- A cutting-tool, T, is mounted in a suitable slide-rest on the part J. Power is conveyed to the pulleys M from any convenient motor through a rope belt or other suitable means. By this means the end of the bed is trued in a plane at right angles to the axis of the arbor B. be removed, to be again used in preparing another bed-frame.

In Figs. 11 and 12 I have shown a modified mechanism that I employ for preparing the bed-frame shown in Fig. ll. This bed-frame is for a side-crank engine, and it has, therefore, only a single box, P, for the crankshaft; and in this instance the lower guide, m, is supported upon the upper surface of the projection n, a block, 19, is placed thereon, and the upper guide is supported on this block, or the two guides are sometimes formed integrally.

In preparing this bed-frame 1 use an arbor of an L shape, the short arm projecting from one side only.

The plates 0 may be formed in one piece, having an opening therethrough for the arbor, and provided with the bolts b and screws f, as shown in Fig. 12; or separate plates may be used.

The heads of the bolts 12 may be arranged to cover the holes in the projections n and keep the metal from escaping.

Suitable sleeves, 0, Fig. 9, may be provided, to be placed on the cross-arbor when larger beds are to be fitted.

No part of the engine requires especial fitting, but all may be brought to the same standard, and the like parts are all interchangeable.

No skilled labor is required for fitting the bed. The arbor is centered in the bed, and then all of the parts are brought into proper relation to its axes.

The reamer G and tap F are not claimed herein, but are claimed in another pending application and no claim is made to the means for finishing the boxes of the crankshaft, and cross part of the arbor may in some instances be omitted.

I claim as my invention 1. The combination, with the arbor, of the plates G C, means for securing said plates to the arbor, and the adj usting serews f, all substantially as described, and for the purpose set forth.

2. The combination, with the arbor B E, having the two parts at right angles to each other, of means for centering said arbor in an engine bed frame, revolving tools, as described, mounted on said arbor for truing the The arbor may then end of the bed, and plates 0 C, secured to said arbor for preparing the supporting project-ions to receive the cross-head guides, all substantially as described.

3. The combination, with the arbor B E, having the two parts at right angles to each other, of means, described, for centering said arbor in an engine bed-frame, and re volving tools mounted on said arbor for truing the end of the bed-frame, all substantially as described.

4. The combination, with the arbor I E, having the two parts at right angles to each other, of means for centering said arbor in an engine bed-frame, and the plates 0 O, secured to the arbor for preparing the supporting pro jections for the crosshead guides, all substantially as described.

5. The combination, with the arbor having the longitudinal groove or grooves 6 of the plates 0, having a corresponding groove, the key 0, bolts Z), bolt (1, and screws f, all substantially as described.

6. The combination, with the arbor B, of means for centering said arbor in an engine bed-frame, the cutter-head J, mounted on the arbor and carrying the tool T, and means for revolving said cutter-head, as and for the purpose set forth.

7. The combination, with the arbor B E, of means for centering said arbor in an engine bed-frame, and means mounted on said arbor for truing the end of the bed, said means consisting of the part B, clamped to the arbor and carrying the shaft S, pulley M, and gear L, and the cutter-head J, adapted to revolve freely on said arbor and provided with a gear, K, and cutter T, all substantially as described.

8. The combination, with the bed-frame A, having the projections a n, of the arbor B, centerer D, the plates 0, having recesses fitting the arbor, means for securing said plates to the arbor, the bolts b, and screws f, as and for the purpose set forth.

9. The combination, with the bed-frame A, of the arbor B, the tapering threaded split sleeve II, the cutter-head J, mounted on the arbor and carrying the tool T, and means for revolving said slide-rest, as and for the purpose sct forth.

In testimony whereof I have hereunto set my hand this 17th day of June, 1885.

"WILLIAM F. PARISH.

In presence of L. SCIILESINGER, A. 0. PAUL. 

